waitress

waitress is a valid word in Scrabble and Words With Friends. It has 8 letters and scores 11 points before any board bonuses (w 4 + a 1 + i 1 + t 1 + r 1 + e 1 + s 1 + s 1).

It is an anagram of 1 other word: waisters.

“WAITRESS” on Wiktionary